| 广西北海涠洲岛晚更新世火山活动引起的地震同沉积变形构造 |
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| 引用本文： | 杜远生,彭冰霞,韩欣.广西北海涠洲岛晚更新世火山活动引起的地震同沉积变形构造[J].沉积学报,2005,23(2):203-209. |
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| 作者姓名： | 杜远生 彭冰霞 韩欣 |
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| 作者单位： | 中国地质大学地球科学学院,武汉 430074 |
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| 基金项目： | 中国地质大学校科研和教改项目 |
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| 摘 要： | 广西北海涠洲岛晚更新世湖光岩组为一套火山碎屑沉积,同期火山岩发育。在靠近火山口的地区,湖光岩组发育一系列地震成因的同沉积变形构造,包括:地震微断裂(张扭性地震微断裂、张性地震微断裂、共扼性地震微断裂和阶梯状地震微断裂)、微褶皱纹理、落石沉陷构造和砂泥岩脉。分析认为这些同沉积-变形构造是由同期火山活动引起的地震作用形成的。
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| 关 键 词： | 广西 晚更新世 火山活动 地震 震积岩 |
| 文章编号： | 1000-0550（2005）02-0203-07 |
| 收稿时间： | 2004-09-27 |
| 修稿时间： | 2004-11-20 |
Syn-depositional Deformation Structures by Earthquake Related to Volcanic Activity of the Late Pleistocene in Weizhou Island, Beihai City, Guangxi |
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| DU Yuan-sheng,PENG Bing-xia,HAN Xin.Syn-depositional Deformation Structures by Earthquake Related to Volcanic Activity of the Late Pleistocene in Weizhou Island, Beihai City, Guangxi[J].Acta Sedimentologica Sinica,2005,23(2):203-209. |
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| Authors: | DU Yuan-sheng PENG Bing-xia HAN Xin |
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| Institution: | Faculty of Earth Sciences, China University of Geosciences, Wuhan 430074 |
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| Abstract: | The Late Pleistocene Huguangyan Formation in Weizhou island, Beihai city, Guangxi consists of volcanic clastic rocks. Volcanic rocks develop near Huguangyan Formation. Near the crater, a series of syn-depositional deformation structures are developped in the Huguangyan Formation, which includes seismic micro-fractures(tensile-shear,tensile,conjugated and ladder fractures), micro-corrugated laminations, sinking rockfall structures and sand-muddy veins. These structures are believed resulting from earthquake related to volcanic activity of the Late Pleistocene. |
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| Keywords: | Guangxi the Late Pleistocene volcanic activity earthquake seismites |
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